Impala Documentation

int Impala::Core::VideoSet::KfrMotionExtractor::FullSearch16	(	unsigned char *	refframe,
		unsigned char *	desframe,
		int	framewidth,
		int	frameheight,
		int *	cx,
		int *	cy
	)			`[inline]`

Definition at line 1065 of file KfrMotionExtractor.h.

References GetMotionError16(), and MAX_DISP.

01066     {
01067         int minerror;
01068         int curX, curY;
01069         int error, oX, oY;
01070         int sx, sy;
01071 
01072         int i, j;
01073         unsigned char * block;
01074         block = desframe + * cy * framewidth + * cx;
01075 
01076         // first
01077         oX = curX = * cx; 
01078         oY = curY = * cy;
01079         if (curX < 0 || curX > framewidth - 16|| curY < 0 || curY > frameheight - 16) 
01080         {
01081             * cx = * cy = 0;
01082             return -1;
01083         }
01084         minerror = GetMotionError16(refframe, block, framewidth, curX, curY);
01085 
01086         for (i = 1; i <= MAX_DISP; i ++)
01087         {
01088             sx = sy = -i;
01089             for (j = 0; j < 8 * i; j ++)
01090             {
01091                 curX = oX + sx;
01092                 curY = oY + sy;
01093 
01094                 if (!(curX < 0 || curX > framewidth - 16|| curY < 0 || curY > frameheight - 16))
01095                 {
01096                     error = GetMotionError16(refframe, block, framewidth, curX, curY);
01097                     if (error < minerror)
01098                     {
01099                         minerror = error;
01100                         * cx = curX;
01101                         * cy = curY;
01102                     }
01103                 }
01104 
01105                 if (j < 2 * i) sx++;
01106                 else if (j < 4 * i) sy++;
01107                 else if (j < 6 * i) sx--;
01108                 else sy--;
01109             }
01110         }
01111 
01112         return minerror;
01113 
01114     }

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